On Ubuntu 14.04 when I do any system intensive task like gaming and when temperatures reach over 80C for CPU and 70C for GPU, fan doesn't spin as fast as it does in Windows 7 under even lower temps. On Minecraft CPU quickly goes up to 85 and more but fan is still one level lower than it is under Windows 7 when CPU reaches 79C. I always thought that fan is controlled by BIOS because I couldn't control it in Win 7 but now it seems that OS can actually control it. I'm not sure about that though. Also, I can't control screen brightness when Ubuntu is powered on, but I can change it when the Acer logo on boot up is shown. Maybe fan and brightness have some connection in this issue.
Acer Aspire 5830G
i7-2620m 2.7ghz, GT 540M 2GB, driver 331.38, 8GB DDR3 1333
I really want to use Ubuntu instead of Windows but this prevents me from doing it completely. Does anyone know how to enable fan to spin as fast as it does in Windows?
Thanks in advance!